dohnuts: I was curious why you even needed to do Hex editing on DP3 given that there is supposedly native support for the 6850 (Barts) as of DP3.
http://en.wikipedia....X_Mountain_Lion (System Requirements last bullet)
On my previous build with a Core 2 Duo CPU I had to do editing to get anything to work besides a single DVI output, but only got as far as adding Dual Link and VGA output after hours of frustrating editing leading nowhere.
On my current build with a Core i7 2700k the support seemed much better with dual DVI working using AtiConfig=Pithecia GraphicsEnabler=No on boot, as per a recommendation I saw in the tonymac database. Interestingly those same settings didn't work on my previous build (maybe because that was a SL build).
More interestingly these settings don't seem to work if I want to make them permanent in my Boot file using Chameleon Wizard - instead I just get gray screens! But if I type AtiConfig=Pithecia GraphicsEnabler=No by hand at the Chameleon boot loader screen the dual DVI output works fine. My benchmark drops ever so slightly but it's fine I guess.
So I thought then my three choices are:
1) maybe to start up the Hex editing again (I really don't want to unless I feel I have a good chance to succeed, but maybe now that I'm on Lion then other people's ATI6000.kext like the OP's will finally work for me???),
2) figure out why AtiConfig=Pithecia GraphicsEnabler=No doesn't work if put permanently into the Boot file (maybe I should edit it by hand?), or
3) give ML DP3 a shot, but I'm worried about other issues I might face (mostly software compatibility) since I have a stable 10.7.3 and I was waiting so long for dual DVI, I only want to upgrade if there's little to no risk of trading one problem for another (or several).
So my questions are:
How is software compatibility in ML DP3?
Same benchmarks, if you're doing them?
Questions for anyone:
Does it matter which vendor's 6850 you have? I have the Powercolor one.
A heads up to anyone working on their card who tried everything but can't get it to work:
On my first build, my offset was different than the one everyone seems to have in this thread. But maybe it's because it was an SL build? So if you're on SL, double check you are using the right offset if you're working on Duckweed, because mine was different for both 32bit and 64bit.
Thanks for any help from anyone.
lunar7Member Since 20 Feb 2012
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